Novel tropolone derivatives



United States Patent 3,419,599 NOVEL TROPOLONE DERIVATIVES John Krapcho, Somerset, N.J., assignor, by mesne assignments, to E. R. Squibb & Sons, Inc., New York, N.Y.,

a corporation of Delaware No Drawing. Original application Dec. 26, 1962, Ser. No. 247,274, now Patent No. 3,326,963, dated June 20, 1967. Divided and this application Dec. 27, 1966, Ser. No. 604,555

3 Claims. (Cl. 260-473) ABSTRACT OF THE DISCLOSURE This disclosure relates to substituted phenyl derivatives of 6-hydroxy-7-oxo-1,3,5-cycloheptatriene 1 carboxylic acids and salts thereof. The compounds of this disclosure have been found to possess anti-microbial activity.

This is a divisional application of US. application, Ser. No. 247,274, filed Dec. 26, 1962, now US. Patent No. 3,326,963.

This invention relates to new compounds and more particularly to compounds of the general Formula I:

and acid-addition and quaternary ammonium salts thereof, wherein A is lower alkylene; B is a basic nitrogencontaining radical of less than 12 carbon atoms; and R is phenyl, an (X) -substituted phenyl, thienyl, furyl, nitr-ofuryl, pyridyl, naphthyl and indolyl, wherein X is hydrogen, halogen (e.g., chloro and bromo), trifiuoromethyl, nitro, lower alkyl, lower alkoxy and lower alkenoyl (e.g., acetyl and propionyl), and n is 1, 2 or 3.

Among the suitable radicals represented by the symbol B are: amino, (lower alkyl)amino; di(lower alkyl)amino; (hydroxy-lower alkyl)arnino; di(hydxroxy-lower alkyl)amino; (X) -substituted phenyl(lower alkyl)amino; N-(lower alkyl)-N-[(X) -substituted phenyl (lower a1- kyl)]-'amino; allylamino; diallylamino; and saturated to fi-membered monocyclic heterocyclic radicals of less than twelve carbon atoms, as exemplified by piperidino; (lower alkyl)piperidino; di(lower alkyl)piperidino; (lower alkoxy)-piperidino; 2,3 or 4-piperidyl; 2,3 or 4-(N- lower alkyl-piperidyl); pyrrolidino; (lower alkyl)pyrrolidino; di(lower alkyl)pyrrolidino; (lower alkoxy)pyrrolidino; 2 or 3-pyrrolidyl; 2 or 3-(n-lower alkyl-pyrrolidyl); morpholino; (lower alkyl)-morpholino; di(lower alkyl) morpholino; (lower alkoxy)morpholino; thiamorpholino; (lower alkyl)thiamorpholino; di(lower alkyDthiamorpholino; (lower alkoxy)thiamorpholino; piperazino; (lower alkyl)piperazino (e.g., N -methylpiperazino); di- (lower alkyl)piperazino; (lower alkoxy)piperazino; (hydroxy-lower alkyl)piperazino (e.g. N -2-hydroxyetl1y1piperazino); (lower alkanoyloxy-lower alkyl)piperazino (e.g. N -2-aoetoxyethylpipenazino); and (hydroxy-lower alkoxy-lower alkyl)piperazino (e.g. N -2-hydroxyethoxyethyl)piperazino. The terms lower alkyl and lower alkoxy as employed herein includeboth straight and branched chain radicals of less than eight carbon atoms.

The preferred compounds are those wherein B is di (lower alkyl)amino or N -met-hylpiperazino; A is ethylene or propylene; and R is phenyl, alkoxy phenyl, halo 3,419,599 Patented Dec. 31, 1968 ice phenyl, Z-thienyl, 2-furyl S-nitrofuryl or 4 pyridyl. Particularly preferred are those compounds wherein B is di(lower alkyl)amin0; A is ethylene or propylene and R is phenyl.

As to the salts, those coming within the purview of this invention include acid-addition salts, particularly the non-toxic quaternary ammonium salts. Acids useful for preparing the acid-addition salts include inter alia, inorganic acids, such as the hydr-ohalic acids (e.g. hydrochloric and hydrobromic acid), sulfuric acid, nitric acid, and phosphoric acid, and organic acids, such as oxalic, tartaric, malic, citric, acetic and succinic acid. Salts useful in preparing the quaternary ammonium salts include, inter alia, the lower alkyl halides and sulfates (e.g. methyl chloride, methyl bromide and diethyl sulfate) and the monocyclic aryl(lower alkyl) halides and sulfates (e.g. benzyl chloride).

The compounds of this invention are therapeutically active substances which exhibit anti-microbial activity. The compounds of this invention are useful as microbicides against such organisms as Staphylococcus aureas, K. pneummliae, Trichophyton metagrophytes, Bacillus Calmette-guerin.

The compounds of this invention may be administered orally, parenterally or topically, the dosage being adjusted for the relative potency of the particular compound, for example, the compounds of this invention may be administered topically in the form of an ointment or cream, the vehicle for which may be any pharmaceutically acceptable one known to the art to be useful for such purposes. Oral administration may be accomplished in the manner known to the art, for example, by tablet or capsule dosage forms, the dosage being adjusted for the particular compound employed and the requirements of the patient being treated.

The preferred and general method for preparing the compounds of this invention involves reacting a dicarboxylic acid of the general formula with an aromatic aldehyde of the formula RCHO wherein R' is as hereinbefore defined, to yield new styryl monocarboxylic acid intermediates of this invention of the general formula III invention. Suitable basically substituted alkyl halides include amino (lower alkyl) chlorides, such as 2-aminoethyl chloride and 3-aminopropyl chloride; (lower alkyl) amino(lower alkyl)chlorides such as methylaminomethyl chloride, 2 methylaminoethyl chloride, and 3 ethylaminopropyl chloride; di(lower alkyl)amino(lower alkyl) chlorides, such as 2 dimethylaminoethyl chloride, 3-dimethylaminopropyl chloride, diethylaminopentyl chloride, and 2 dipropylaminohexyl chloride; (hydroxylower alkyl)amino(lower alkyl) chlorides, such as 2 (2- hydroxy ethyl)aminoethyl chloride; di(hydroxy-lower alkyl)amino(lower alkyl) chlorides such as 3 (2 hydroxyethyl)aminopropyl chloride; phenyl(lower alkyl) amino(lower alkyl)chlorides, such as 2 benzylaminoethyl chloride, 3 phenethylaminopropyl chloride, and 4 benzylaminobutyl chloride, and halo trifiuoromethyl, nitro, lower alkyl and lower alkoxy substituted phenyl derivatives thereof; N-(lower alkyl)phenyl(lower alkyl) amino chlorides, such as 2 (benzyl-methylamino)ethyl chloride, and halo, trifluoromethyl, nitro, lower alkyl and lower alkoxy substituted phenyl derivatives thereof; allyl amino-(lower alkyl) chlorides, such as 2-allylaminoethyl chloride; di(allyl)amino(lower alkyl) chlorides, such as 3-diallylaminopropyl chloride; and saturated 5 to 6 membered monocyclic heterocyclic lower alkyl chlorides.

The following examples illustrate the invention, all temperatures being in degrees centigrade.

EXAMPLE 1 6-hydroxy-7-oxo-2-styryl-1,3 ,5 -cycloheptatrienel-carboxylic acid, ester with Z-diethylaminoethanol (A) 6-hydroxy 7 oxo 2 styryl-1,3,5-cycloheptatriene-l-carboxylic acid (II).The reaction of 24.0 g. of 3 carboxy 4 carboxymethyltropolone with 12 m1. of benzaldehyde is carried out under the reaction conditions set forth in the Journal of the American Chemical Society, vol. 81, p. 3443 (1959), to yield 25 g. of a crude yellow-brown product, M.P. about 163166 C. This material is then triturated with 50 ml. of hot acetonitrile, cooled and filtered to yield 16.5 g. of 6-hydroxy-7-ox0-2- styryl 1,3,5 cycloheptatriene 1 carboxylic acid having a melting point of about 169171 C.

(B) 6-hydroxy 7 oxo 2 styryl-1,3,5-cycloheptatriene-l-carboxylic acid, ester with 2-diethylaminoethanol.A mixture of 13.4 g. of 6 hydroxy-7-oxo-2-styryl- 1,3,5 cycloheptatriene 1 carboxylic acid in 200 ml. of isopropyl alcohol is added to a solution of 1.15 g. of sodium in 200 ml. of isopropyl alcohol. The sodium salt of the acid precipitates from the mixture. After stirring r for 30 minutes, the mixture is treated with 8.0 g. of 2- diethylarninoethyl chloride and heated to reflux temperature. 200 ml. of diglyme is added, the mixture continued to reflux for four hours, and the solvent removed under reduced pressure. The residue is treated with 100 ml. of water, filtered and dried to yield 15.0 g. of 6-hydroxy- 7-oxo-2-styryl 1,3,5 cycloheptatriene 1 carboxylic acid, ester with 2-diethylaminoethanol, having a melting point of about 149150 C. After crystallization from 450 ml. of acetonitrile 11.2 g. of 6 hydroxy-7-oxo-2- styryl 1,3,5 cycloheptatriene 1 carboxylic acid, ester with 2-diethylaminoethanol, having a melting point of about 151-152 C., is obtained.

EXAMPLE 2 6-hydroxy 7 oxo 2 styryl-1,3,5-cycloheptatriene-1- carboxylic acid, ester with Z-diethylaminoethanol, hydrochloride A suspension of 1.0 g. of 6 hydroxy-7-oxo-2-styryl- 1,3,5 cycloheptatriene 1 carboxylic acid, ester with 2-diethylaminoethanol in 47 ml. of water is treated with 2.7 ml. of N-hydrochloric acid and the resulting solution is evaporated under reduced pressure to yield the hydrochloride salt of 6 hydroxy-7-oxo-2-styryl 1,3,5-cycloheptatriene-l-carboxylic acid, ester with Z-diethylaminoethanol.

EXAMPLE 3 6-hydroxy 7 oxo 2 styryl 1,3,5-cycloheptatriene l-carboxylic acid, ester with Z-diethylaminoethanol, methochloride A suspension of 5.0 g, of 6 hydroxy-7-oxo-2-styryl- 1,3,5 cycloheptatriene 1 carboxylic acid ester with 2-diethylaminoethanol in ml. of acetonitrile is treated with 15 g. of methyl chloride. After standing for one day at room temperature, the solvent is removed under reduced pressure to give the methochloride salt of 6-hydroxy 7 oxo 2 styryl 1,3,5 cycloheptatriene-1- carboxylic acid, ester with 2-diethylaminoethanol.

EXAMPLE 4 6-hydroxy-7-oxo-2-styryl-1,3,5-cycloheptatriene-l-carboxylic acid, ester with 3-dimethylaminopropanol Following the procedure of Example 1, part B, but substituting an equivalent amount of 3-dimethylaminopropyl chloride for 2-diethylaminoethyl chloride yields 6- hydroxy 7 oxo 2 styryl 1,3,5 cycloheptatriene-1- carboxylic acid, ester with 3-dimethylaminopropanol.

EXAMPLE 5 6-hydroxy 7 oxo 2 styryl 1,3,5-cycloheptatrienel-carboxylic acid, ester with N'-(3-hydroxypropyl)-N methylpiperazine Following the procedure set forth in Example 1, part B, but substituting an equivalent amount of N'-(3-chl0ropropyl) N methylpiperazine for 2-diethylaminoethyl chloride yields 6hydroxy 7 oxo 2 styryl 1,3,5- cycloheptatriene 1 carboxylic acid, ester with N'-(3- hydroxypropyl -N -methylpiperazine.

EXAMPLE 6 6-hydroxy 7 oxo 2 (4-chlorostyryl)-1,3,5-cycloheptatriene 1 carboxylic acid, ester with 2-diethylaminoethanol (A) 6-hydroxy 7 oxo 2 (4-chlorostyryl)-1,3,5- cycloheptatriene 1 carboxylic acid.Following the procedure set forth in Example 1, part A,,but substituting an equivalent amount of 4-chlorobenzaldehyde for benzaldehyde there is obtained 6 hydroxy-7-oxo-2-(4-chlorostyryl)-1,3,5-cycloheptatriene-l-carboxylic acid.

(B) 6-hydroxy 7 oxo 2 (4-chlorostyryl) 1,3,5- cycloheptatriene 1 carboxylic acid, ester with Z-diethylaminoethanoL-Following the procedure set forth in Example 1, part B, but substituting 6 hydroxy-7-oxo-2-(4- chlorostyryl) 1,3,5 cycloheptatriene 1 carboxylic acid for 6-hydroxy 7 oxo 2 styryl 1,3,5 cycloheptatriene 1 carboxylic acid, there is obtained 6-hydroxy 7 oxo 2 (4-chlorostyryl) 1,3,5-cycloheptatriene-l-carboxylic acid, ester with 2-diethylaminoethanol.

Similarly, when the 6-hydroxy-7-0xo-2-(4-chlor0styryl)-1,3,5-cycloheptatriene-l-car-boxylic acid is employed in the procedures set forth in Examples 4 and 5, there is obtained the 3-dimethylaminopropanol and N'-(3-hydroxypropyl)-N -methylpiperazine esters of 6-hydroxy-7- oxo-2-(4-chlorostyryl)-1,3,5-cycloheptatriene 1 carboxylic acid, respectively.

EXAMPLE 7 6 hydroxy-7-oxo-2- 3-trifiuoromethylstyryl 1 ,3 ,5 -cycloheptatriene-l-carboxylic acid, ester with 2-diethylaminoethanol (A) 6-hydroxy-7-oxo-2-(3-trifluoromethylstyryl)-l,3,5- cycloheptatriene-1-carboxy1ic acid.-Following the procedure set forth in Example 1, part A, but substituting an equivalent amount of 3-trifluoromethylbenzaldehyde for benzaldehyde there is obtained 6-hydroxy-7-oxo-2-(3- trifiuoromethylstyryl)-1,3,5-cycloheptatriene l carboxylic acid.

methylaminopropanol ester and the N'-(3,-hydroxypropyl)-N methylpiperazine ester thereof respectively.

EXAMPLE 8 6 hydroxy-7oxo-2-(3,4,5-trimethoxystyryl)-1,3,S-cycloheptatriene-l-carboxylic acid, ester with 2-diethylaminoethanol (A) 6 hydroxy-7-oxo-2-(3,4,5-trimethoxystyryl)-1,3,5- cycloheptatriene-l carboxylic acid-Following the procedure setforth in Example 1, part A, but substituting an equivalent amount of 3,4,S-trimethoxybenzaldehyde for benzaldehyde there is obtained 6-hydroxy-7-oxo-2-( 3, 4,5-trimethoxystyryl)-1,3,5-cycloheptatriene 1 carboxylic acid. t

(B) 6 hydroxy-7-oxo-2-(3,4,5-trimethoxystyryl)-1,3,5- cycloheptatriene-1-carboxylic acid, ester with Z-diethylaminoethanol.'Following the procedure set forth in Example 1, part B, but substituting 6-hydroxy-7-oxo-2-(3,4,5-

,trimethoxystyryl)-1,3,5 cycloheptatriene- 1 carboxylic acid for '6 hydroxy-7oxo-2-styryl 1,3,5-cycloheptatrienel-carboxylic acid there is obtained 6-hydroxy-7-oxo-2-(3, 4,5-trimethoxystyryl)-1,3,5-cyc1oheptatriene 1 carboxylic acid, ester with Z-diethylaminoethanol.

Similarly, following the procedures set forth in Examples 4 and 5 but employing 6-hydroxy-7-oxo-2-(3,4,5 trimethoxystyryl)-1,3,5-cycloheptatriene 1 carboxylic acid yields the Z-dime-thylaminopropanol and N'-(3-hydroxypropyl)-N -methylpiperazine esters thereof, respectively.

EXAMPLE 9 6 hydroxy 7-oxo-2-(iudolyl-B-vinylene)-1,3,5-cycloheptatriene-l-carboxylic acid, ester with Z-diethylaminoethanol (A) 6 hydroxy-7-oxo-2-(indolyl-pwinylene)-1,3,5-cycloheptatriene-l-carboxylic acid.-Following the procedure set forth in Example 1, part A, but substituting an equivalent amount of B-indolealdehyde for beszaldehyde there is obtained 6-hydroxy-7-oxo-2-(indolyl-B-vinylene)- 1,3,5-cycloheptatriene-l-carboxylic acid.

(B) 6 hydroxy-7-oxo-2-(indolyl-B-vinylene)-l,3,5-cycloheptatriene-l-carboxylic acid, ester with Z-diethylaminoethanol.Following the procedure set forth in Example 1, part B, but substituting 6-hydr0xy-7-oxo-2-(indolyl- ,B-vinylene)-1,3,5-cycloheptatriene 1 carboxylic acid for 6-hydroXy-7 oxo-2styryl-1,3,5-cycloheptatriene 1 carboxylic acid there is obtained 6-hydroxy-7-oxo-2-(indolylfl-vinylene)-1,3,5-cycloheptatriene-l-carboxylic acid, ester with Z-diethylaminoethanol.

Similarly, following the procedure set forth in Examples 4 and 5 but employing 6-hydroxy-7-oxo-2-(indolyl-B- vinylene) 1,3,5-cycloheptatriene-1-carboxylic acid yields the Z-dimethylaminopropanol and N-(S-hydroxypropyD- N -methylpiperazine esters thereof respectively. it

' EXAMPLE 10 (A) 6 hydroxy-7-oxo-2-(furyl-a-vinylene)-1,3,5-cycloheptatriene-l-carboxylic acid-Following the procedure set forth in Example 1, part-A, but substituting m-furaldehyde for benzaldehyde there is obtained 6-hydroxy7-oxo- 6 2-(furyl-a-vinylene)-l,3,5-cycloheptatriene 1 carboxylic acid.

Similarly, following the procedure of Example 1, part A, but substituting fi-nitro-u-furaldehyde for benzaldehyde there is obtained 6-hydroxy-7-oxo-2-(5-nitro furyl-a-vinylenc -1,3,5-cycloheptatriene-1-carboxylic acid. 1

(B) 6 hydroxy-7-oxo-2-(furyl-a-vinylene)-1,3,5-cycloheptatriene-l-carboxylic acid, ester with 2-dimethylaminoethanol.Following the procedure set forth in Example 1, part B, but substituting 6-hydroxy-7-oxo-2-(furyl-a-vinylene) 1,3,5-cycloheptatriene-l-carboxylic acid for 6-hydroxy 7-oxo-2-styryl-1,3,5-cycloheptatriene-l-carboxylic acid there is obtained 6-hydroxy-7-oxo-2-(furyl-a-vanylene)-1,3,5-cycloheptatriene-l-carboxylic acid, ester with 2- diethylaminoethanol. 1

Similarly, following the procedure set forth in Example 1, part B, but substituting 6-hydroxy-7-oxo-2-(S-nitrofuryl-a-vinylene)-1,3,5-cy=cloheptatriene 1 carboxylic acid for 6-hydroxy-7-oxo-2-styryl-1,3,S-cycloheptatriene-l-carboxylic acid there is obtained ,6-hydroxy-7-oxo-2-,(S-nitrofuryl a vinylene) 1,3,5-cycloheptatriene-l-carboxylic acid, ester with Z-diethylaminoethanol. t A

Similarly, following the procedure set forth in Examples 4 and 5 but employing 6-hydroxy-7-oxo-2-(furyl-avinylene) 1,3,5-cycloheptatriene-l-carboxylic acid yields the 2-dimethylaminopropanol and N-(3-hydroxypropyl)- N -methylpiperazine esters thereof respectively.

EXAMPLE 1l 6 hydroxy-7-oxo-2-(naphthyl-a-vinylene)-1,3,5-cycloheptatriene-l-carboxylic acid, ester with Z-dimethylaminoethanol 1 v t (A) 6 hydroxy-7-oxo-2-(naphthyl-a-vinylene)-1,3,5-

cycloheptatriene-l-carboxylic acid.-Following the procedure of Example 1, part A, but substituting a-naphthaldehyde for benzaldehyde there is obtained 6-hydroxy-7- oxo 2 (naphthyl u-vinylene)-l,3,5-cycloheptatriene-1- carboxylic acid. 1

(B) 6 hydroxy 7-oxo-2-(naphthyl-a-vinylene)-1,3,5-

cycloheptatriene-l-carboxylic acid, ester with Z-diethylaminoethanol.-Following the procedure of Example 1, part B, but substituting 6-hydroxy-7-oxo-2-(naphthyl-avinylene)-1,3,5-oycloheptatriene-l-carboxylic acid for 6- hydroxy 7 oxo 2 styryl-1,3,S-cycloheptatriene-l-carboxylic, acid there is obtained 6-hydroxy-7-oxo-2- (naphthyl m vinylene) 1,3,5 cycloheptatriene .1-

carboxylic acid, ester with Z-diethylaminoethanol.

Similarly, following the procedure set forth in Examples '4 and 5 but employing 6-hydroxy-7-oxo-2-(naphthylt a f vinylene) 1,3,5 cycloheptatriene-l-carboxylic acid yields the, 2-dimethyl-amino propanol and N-(3-hydroxypropyl)-N methylpiperazine esters thereof respectively.

EXAMPLE 12 6 hydroxy 7 oxo 2 (pyridyl-v-vinylene) -1,3,5- cycloheptatriene-l-carboxylic acid, ester with Z-diethylaminoethanol (A) 6 hydroxy 7 oxo-Z-(pyridyl-vwinylene)-1,3,5- cycloheptatriene-l-carboxylic acidr-Following the procedure set forth in Example 1, part A, but substituting pyridine-y-al dehyde for henzaldehyde there is obtained 6 hydroxy 7 ox0-2-(pyridyl-v-vinylene)-1,3,5-cycloheptatriene-l-carboxylic acid.

(B) 6 hydroxy 7 oxo2-(pyridyl-y-vinylene)-1,3,5 cycloheptatriene-l-carboxylic acid, ester with Z-diethylaminoethanoL-Following the procedure set forth in Example 1, part B, but substituting 6-.hydroXy-7-ox0-2- (pyridyl 'y vinylene)-l,3,5-cycloheptatriene-l-carboxylic acid for 6-hydroxy-7-oxo-2-styryl-1,3,5-cycloheptatrienel-carboxylic acid there is obtained 6-hydroxy-7-oxo-2- (py'ridyl y vinylene)-1,3,5- cycloheptatriene-l-carboxylic acid, ester with Z-diethylaminoethanol.

Similarly, following the procedure set forth in Example 4 and 5 but employing 6-hydroxy-7-oxo-2-(pyridyl-- 7 vinylene)-1,3,5cycloheptatriene-l-carboxylic acid yields the 3-dimethyla1rnino propanol and N-(3-hydroxypropyl)- N -methylpiperazine esters thereof respectively.

EXAMPLE 13 6 hydroxy 7 oxo-2-(thienyl-u-vinylene)-1,3,5-cycloheptatriene-l-carboxylic acid, ester with Z-diethylaminoethanol (A) 6 hydroxy 7 oxo-2-(thienyl-a-vinylene)-1,3,5- cycloheptatriene-l-carboxylic acid.Following the procedure set forth in Example 1, part A, but substituting 2-thiophenealdehyde for benzaldehyde there is obtained 6 hydroxy 7 oxo-2-(thienyl-oc-vinylene)-1,3,5-cycloheptat riene-l-carboxylic acid.

(B) 6 hydroxy 7 oX-2-(thienyl-a-vinylene)-1,3,5- cycloheptatriene-l-carboxylic acid, ester with Z-diethylaminoethanol.Following the procedure set forth in Example 1, part B, but substituting 6-hydroxy-7-oxo-2-(thienyla-vinylene)-1,3,S-cycloheptatriene-1-carboxy lic acid for 6 hydroxy 7-oxo-2-styryl-1,3,S-cycloheptatriene-l-carboxylic acid there is obtained 6-hydroxy-7-oxo-2-(thienyla-vinylene)-1,3,5-cycloheptatriene-1-carboxylic acid for with 2diethylaminoethanol.

Similarly, following the procedure set forth in Examples 4 and but employing 6-l1ydroxy-7-oxo-2-(thienyla-vinylene)-1,3,S-cycloheptatriene-1-carboxylic acid yields the 2-dimethyl-aminopropanol and N-(3-hydroxypropyl)- N -methylpiperazine esters thereof respectively.

EXAMPLE 14 6 hydroxy-7-oxo-2-(p-nitrostyryl)-l,3,5-cycloheptatrienel-carboxylic acid, ester with Z-diethylaminoethanol (A) 6 hydroxy 7 oxo-Z-(p-nitrostyryl)-l,3,5-cycloheptatriene-l-carboxylic acid.-Following the procedure set forth in Example 1, part A, but substituting p-nitrobenzaldehyde for benzaldehyde there is obtained 6-hydroxy 7 oxo-2-p-nitrostyry l)-1,3,5-cycl0heptatriene-1- carboxylic acid.

(B) 6 hydroxy 7 oxo-2-(p-nitrostyryl)1,3,5-cycloheptatriene-l-carboxylic acid, ester with 2-diethylaminoethanol.Following the procedure set forth in Example 1, part B, but substituting 6-hydroxy7-oxo-2-(p-nitrostyryl)-1,3,S-cycloheptatriene-l-carboxylic acid for 6- hydroxy-7-oxo-2-styryl-1,3,S-cycloheptatriene-l carboxylic acid there is obtained 6-hydroxy-7-oxo-2-(p-nitrostyryl)- 1,3,5-cycloheptatriene-l-carboxylic acid, ester with 2- diethylarninoethanol.

Similarly, following the procedure set forth in Examples 4 and 5 but employing 6-hydroxy-7-oxo-2-(p-nitrostyryl)-1,3,5-cyc1oheptatriene-l-carboxylic acid yields the Z-dimethylamino-p-ropanol and N-(3-hydroxy-p1'opyD-N methylpiperazine esters thereof respectively.

EXAMPLE 6 hydroxy 7 oxo-2-(4-methylstyryl)-1,3,5-cycloheptatriene-l-carboxylic acid, ester with 2-diethylaminoethanol (A) 6 hydroxy 7oxo-2-(4 methylstyryl)-1,3,5-cyclo heptatriene-I-carboxylic acid.Following the procedure set forth in Example 1, part A, but substituting p-tolylaldehyde for benzaldehyde there is obtained 6-hydroxy-7-oxo 2 (4-methylstyryl)-1,3,5-cycloheptatriene-l carboxylic acid.

(B) 6 hydroxy 7-oxo-2-(4-methylstyryl)-1,3,5-cycloheptatriene-l-carboxylic acid, ester |with Z-diethylaminoethanol.Following the procedure set forth in Example 1, part B, but substituting 6-hydroxy-7-oxo-2-(4-methylstyryl)-1,3,5-cycloheptatriene-l carboxylic acid for 6- hydroxy 7 oxo Z-styryl-l,3,S-cycloheptatriene-hcarboxylic acid there is obtained -6-hydroxy-7-oxo-2-(4- methylstyryl) 1,3,5 cycloheptatriene-1-carboxylic acid, ester with 2-diethylaminoethanol.

Similarly, following the procedure set forth in Examples 4 and 5 but employing 6-hydroxy-7-oxo-2-(4-methyl- 8 styryl)-1,3,5-cycloheptatriene-l-carboxylic acid 'yields the Z-dimethylamino-propanol and N -methylpiperazine esters thereof respectively.

EXAMPLE 16 6 hydroxy 7-oxo-2-styry1-1,3,5-cycloheptatriene-l-carboxylic acid, ester with methylaminomethanol Following the procedure of Example 1, part B, but substituting an equivalent amount of methylaminomethyl chloride for Z-diethylaminoethyl chloride yields 6- hydroxy-7-oxo-2-styryl-1,3,S-c-ycloheptatriene-l-carboxylic acid, ester with methylaminomethanol.

EXAMPLE 17 6 hydroxy 7-oxo-2-styryl-1,3,S-cycloheptatriene-l-carboxylic acid, ester with 2-benz-ylaminoethanol Following the procedure of Example 1, part B, but substituting an equivalent amount of 2- benzylarninoethyl chloride for Z-diethylaminoethyl chloride yields 6-hydroxy- 7 oxo 2-styryl 1,3,S-cycloheptatriene-l-carboxylic acid, ester with 2-benzylaminoethanol.

EXAMPLE 18 6-hydroxy-7-oxo-2-styryl-1,3,5-cycloheptatriene-1- carboxylic acid, ester with 3-diallylaminopropanol Following the procedure of Example 1, part B, but substituting an equivalent amount of 3-diallylaminopropyl chloride for Z-diethylaminoethyl chloride yield 6-hydroxy- 7-oxo-2-styryl-1,3,5-cycloheptatriene 1 carboxylic acid, ester with 3-diallylaminopropanol.

EXAMPLE 19 6-hydroxy-7-oxo-2-styryl-1,3,5-cycloheptatriene-l-carboxylic acid, ester with 2-(2-hydroxyethyl)aminoethanol Following the procedure of Example 1, part B, but substituting an equivalent amount of 2-(2-hydroxyethyl) aminoethyl chloride for 2-diethylaminoethyl chloride yields 6 hydroxy-7-oxo-2-styryl-1,3,5-cycloheptatriene-1- carboxylic acid, ester with 2-(Z-hydroxyethyl)aminoethanol.

This invention may be variously otherwise embodied within the scope of the appended claims.

What is claimed is:

1. A compound selected from the group consisting of bases of the formula and pharmaceutically acceptable non-toxic acid addition and quaternary ammonium salts thereof, wherein A is lower alkylene; B is a basic nitrogen-containing radical of less than twelve carbon atoms selected from the group consisting of amino, (lower a1kyl)amino; di(lower alkyl) amino; (hydroxy-lower alkyl)-amino; di(hydroxy-lower alkyl)amino; (X) -substituted phenyl(lower alkyl)amino; N-(lower alkyl)-N-[(X) -substituted phenyl(lower alkyl)]-amino; allylamino; diallylamino; piperidino; piperidyl; (N-lower alkylpiperidyl); pyrrolidino; pyrrolidyl; (N-lower alkylpyrrolidyl); morpholino; thiamorpholino; piperazino; (lower alkyl)piperazino; di(lower alkyl)piperazino; (lower alkoxy)piperazino; (hydroxy-lower alkyl) piperazino; (lower alkanoyloxy-lower alkyl)piperazino; and (hydroxy-lower alkoxy-lower alkyl)piperazino and R is an (X) -substituted phenyl wherein X is selected from the group consisting of halogen, trifluoromethyl, nitro,

9 10 lower alkyl, lower alkoxy and lower alkanoyl; and n is a References Cited positive integer less than 4.

2. A compound in accordance with claim 1 having the UNITED STATES PATENTS name 6 hydroxy-7-ox0-2-(4-chlorostyryl)-1,3,5-cyclohep- 3,326,963 6/1967 Krapcho 26O-473 galtcrlligiat-slgfizgillgggylic acid ester with 2-d1ethylammoethanol 5 JOHN D. RAND OLPH P y Examiner.

3. A compound in accordance with claim 1 having the U S C1 X R name 6-hydroxy 7 oxo-2-(3,4,5-trimethoxystyry1)-1,3,5-

cycloheptatriene-l-carboxylic acid ester with Z-diethyl- 260240, 295, 326.13, 347.3, 332,2, 250; l67-33, 55, 63

aminoethanol and salts thereof. 10 

